TY - JOUR
T1 - Revision of the proteaceae macrofossil record from Patagonia, Argentina
AU - Gonzalez, Cynthia C.
AU - Gandolfo, Maria A.
AU - Zamaloa, Maria C.
AU - Cúneo, Nestor R.
AU - Wilf, Peter
AU - Johnson, Kirk R.
N1 - Funding Information:
The authors are indebted to personnel and volunteers of the MEF, especially to M. Caffa, L. Canessa, J. L. Carballido, B. Cariglino, M. Delloca, I. Escapa, R. Horwitt, R Puerta, and E. Ruigomez. Our thanks to the Nahueltripay family for land access and to S. Wing for his work in the 1999 field season. Many thanks to the curators of the collections of the Museo Paleontol6gico Egidio Feruglio, Museo Argentino Bernardino Riva-davia, Museo de Ciencias Naturales de La Plata, Instituto Miguel Lillo, Herbario del In-stituto de Botfinica Agrfcola del Instituto Nacional de Tecnologfa Agropecuaria, Herbario y Laboratorio de Biologfa de la Universidad Nacional de la Patagonia San Juan Bosco-Sede Trelew (Argentina), Smithsonian Institution and L. H. Bailey Hortorium Cornell University (U.S.A.). A. Archangelsky and E. J. Hermsen provided thoughtful comments on the manuscript. We acknowledge A. Ash for the USNM photos and E Balcells for figure preparation. This research was supported in part by NSF DEB-0345750 to PW. MAG, C.C. Labandeira, and NRC; a Franklin Research Grant from the American Philosophical Society to MAG: a National Geographic Society Grant 7337-02 to PW: and the University of Pennsylvania Research Foundation and the Andrew W. Mellon Foundation (PW).
PY - 2007/7
Y1 - 2007/7
N2 - Proteaceae are restricted to the Southern Hemisphere, and of the seven tribes of the subfamily Grevilleoideae, only three (Macadamieae, Oriteae, and Embothrieae) have living members in Argentina. Megafossil genera of Proteaceae recorded from Patagonia include Lomatia, Embothrium, Orites, and Roupala. In this report, we evaluate and revise fossil Argentine Proteaceae on the basis of type material and new specimens. The new collections come from the Tufolitas Laguna del Hunco (early Eocene, Chubut Province), the Ventana (middle Eocene, Río Negro Province), and the Río Nirihuau (late Oligocene-early Miocene, Río Negro Province) formations, Patagonia, Argentina. We confirm the presence of Lomatia preferruginea Berry, L. occidentalis (Berry) Frenguelli, L. patagonica Frenguelli, Roupala patagonica Durango de Cabrera et Romero, and Orites bivascularis Romero, Dibbern et Gandolfo. Fossils assigned to Embothrium precoccineum Berry and E. pregrandiflorum Berry are doubtful, and new material is necessary to confirm the presence of this genus in the fossil record of Patagonia. A putative new fossil species of Proteaceae is presented as Proteaceae gen. et sp. indet. Fossil Proteaceae are compared with modern genera, and an identification key for the fossil leaf species is presented. Doubtful historical records of Proteaceae fossils for the Antarctic Peninsula region and Patagonia are also discussed. Based on this revision, the three tribes of Proteaceae found today in Argentina were already present in Patagonia by the early Eocene, where they probably arrived via the Australia-Antarctica- South America connection.
AB - Proteaceae are restricted to the Southern Hemisphere, and of the seven tribes of the subfamily Grevilleoideae, only three (Macadamieae, Oriteae, and Embothrieae) have living members in Argentina. Megafossil genera of Proteaceae recorded from Patagonia include Lomatia, Embothrium, Orites, and Roupala. In this report, we evaluate and revise fossil Argentine Proteaceae on the basis of type material and new specimens. The new collections come from the Tufolitas Laguna del Hunco (early Eocene, Chubut Province), the Ventana (middle Eocene, Río Negro Province), and the Río Nirihuau (late Oligocene-early Miocene, Río Negro Province) formations, Patagonia, Argentina. We confirm the presence of Lomatia preferruginea Berry, L. occidentalis (Berry) Frenguelli, L. patagonica Frenguelli, Roupala patagonica Durango de Cabrera et Romero, and Orites bivascularis Romero, Dibbern et Gandolfo. Fossils assigned to Embothrium precoccineum Berry and E. pregrandiflorum Berry are doubtful, and new material is necessary to confirm the presence of this genus in the fossil record of Patagonia. A putative new fossil species of Proteaceae is presented as Proteaceae gen. et sp. indet. Fossil Proteaceae are compared with modern genera, and an identification key for the fossil leaf species is presented. Doubtful historical records of Proteaceae fossils for the Antarctic Peninsula region and Patagonia are also discussed. Based on this revision, the three tribes of Proteaceae found today in Argentina were already present in Patagonia by the early Eocene, where they probably arrived via the Australia-Antarctica- South America connection.
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U2 - 10.1663/0006-8101(2007)73[235:ROTPMR]2.0.CO;2
DO - 10.1663/0006-8101(2007)73[235:ROTPMR]2.0.CO;2
M3 - Review article
AN - SCOPUS:35348940217
SN - 0006-8101
VL - 73
SP - 235
EP - 266
JO - Botanical Review
JF - Botanical Review
IS - 3
ER -